21837920

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{10499}}^1$

素因数の和:10527

約数の個数: 48

約数和(自身を含む): 55566000

約数和(自身を除く): 33728080

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 65, 80, 104, 130, 160, 208, 260, 416, 520, 1040, 2080, 10499, 20998, 41996, 52495, 83992, 104990, 136487, 167984, 209980, 272974, 335968, 419960, 545948, 682435, 839920, 1091896, 1364870, 1679840, 2183792, 2729740, 4367584, 5459480, 10918960, 21837920]

約数ペア:

[(1, 21837920), (2, 10918960), (4, 5459480), (5, 4367584), (8, 2729740), (10, 2183792), (13, 1679840), (16, 1364870), (20, 1091896), (26, 839920), (32, 682435), (40, 545948), (52, 419960), (65, 335968), (80, 272974), (104, 209980), (130, 167984), (160, 136487), (208, 104990), (260, 83992), (416, 52495), (520, 41996), (1040, 20998), (2080, 10499)]